Adolf Hitler

public class PrimeNumber { public static boolean isPrime(int n) { if (n <= 1) { return false; } if (n <= 3) { return true; } if (n % 2 == 0 || n % 3 == 0) { return false; } for (int i = 5; i * i <= n; i += 6) { if (n % i == 0 || n % (i + 2) == 0) { return false; } } return true; } public static void main(String[] args) { int num = 29; if (isPrime(num)) { System.out.println(num + " is a prime number."); } else { System.out.println(num + " is not a prime number."); } } }